Siemens siprotec 7SA6 User Manual page 328

Distance protection

Hide thumbs Also See for siprotec 7SA6:

Table of Contents

Switching onto a

Fault Detection and

7131 >I-STUB ENABLE

7130 >BLOCK I-STUB

7110 >O/C InstTRIP

!%' TPUAÃUv€rÃ9@G6`

Logic diagram of the stub protection

To achieve fast tripping following manual closure of the circuit breaker onto a dead

fault, the switch onto fault signal can be routed to the overcurrent protection. The

overcurrent protection can then trip three-pole without delay or with a reduced delay.

It can be determined via setting parameter for which stage(s) the rapid tripping

following closure on to a dead fault applies. (Refer also to the logic diagrams in Figure

6-83, 6-84 and 6-86, and Sub-section 6.1.3, margin "Circuit Breaker Status").

The fault detection signals of the individual phases (and earth) and the individual

stages are combined in such a manner that both the phase information as well as the

stage information of the picked up stages can be output. (Table 6-10).

In the case of the trip signals, the stage which resulted in the trip command is also

indicated. If the device has the option to trip single-pole, and this option has been

activated, the pole which has been tripped is also indicated during single-pole tripping

(refer also to Sub-section 6.20.4 Overall Tripping Logic of the Device).

!%"" UÃ"D3ÃTUV7

DTUV7ÃUryrƒ7D

I-STUB Pickup L1

I-STUB Pickup L2

I-STUB Trip L1

I-STUB Pickup E

I-STUB Trip E

C53000-G1176-C133-1

I-STUB Pickup L3

I-STUB Trip L2

I-STUB Trip L3

Show Quick Links

Table of Contents